Results 31 to 40 of about 215,177 (206)
建筑工程与管理我国水利领域包含了各式各样的水电站，这些水电站有着不同规模与类型。其中，电气设备属于核心构成部分，它对水电站的运行成效以及效率有着直接的影响。在水电站实际运行期间，电气设备的性能状况以及稳定性始终受到高度重视，目的就在于保证其能一直契合发电以及控制方面的要求。不过，电气设备在使用环节里常常会出现故障情况，如此一来，设备的规范性以及可靠性便很难得以保障，最终还可能诱发潜在的安全方面的风险。文章针对水电站电气设备所存在的故障问题展开分析，深入探究提升设备运行稳定性以及安全性的那些关键举措 ...
Pei-Dong Zhang
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Journal of Critical Infrastructure Policy, Volume 7, Issue 1, Spring/Summer 2026.ABSTRACT Time and chronology form the invisible architecture upon which modern civilization depends, governing synchronization across markets, power grids, communication networks, transportation, and defense. Yet, this shared temporal framework, engineered through atomic clocks, satellites, and digital synchronization, faces growing vulnerabilities ...
Bilal M. Ayyub
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Journal of Critical Infrastructure Policy, Volume 7, Issue 1, Spring/Summer 2026.ABSTRACT The infiltration of counterfeit, fraudulent, and suspect items into civil nuclear supply chains, notably within power generation and medical isotope production, poses severe safety and security threats. The ever‐increasing growth in nuclear installations (70 power plants are under construction and another 100 are in the planning stage) and the
Hafiz Ahmed
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建筑技术研究电力系统运行中,输变电一次设备故障威胁电网安全与可靠供电,新能源大规模接入使故障特性与恢复策略面临新挑战。本文先分析设备本体故障(绝缘劣化等)与外部因素故障(自然灾害等)类型及影响,探讨新能源接入对故障特性的改变；接着阐述考虑新能源设备特殊性的应急处置技术；最后提出故障快速恢复方案,包括原则目标、流程、资源保障及结合新能源的优化建议,助力电网快速恢复。
Yu Bao
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The Rhetoric of Disenchantment: Ghost Belief and Secular Critique in Early Twentieth‐Century China
Cognitive Science, Volume 50, Issue 1, January 2026.Abstract This study presents the first large‐scale empirical analysis of how ghosts and spirits were debated during China's early twentieth‐century secular transformation. Using a novel dataset of over 2000 digitized texts—including newspapers, periodicals, and essays from 1890 to 1949—we combine close reading, AI‐assisted annotation, and statistical ...
Ze Hong, Yuqi Chen
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不連続再収斂順序回路の遅延故障に対するテスト生成法 [PDF]
, 2003 本論文では，遅延故障に対してテスト生成が容易な順序回路の構造として，不連続再収斂構造を定義し，不連続再収斂順序回路の遅延故障に対するテスト生成問題が，その時間展開モデルの遅延故障に対するテスト生成問題に帰着できることを示す．これに基づき，不連続再収斂順序回路の遅延故障に対するテスト生成法を提案する．提案手法は，2パターンテストでテストできる遅延故障のモデル（パス遅延故障，セグメント遅延故障，トランジション故障など）に対して適用できる．また，本論文では，一般の順序回路に対して提案手法を適用するために ...
大竹, 哲史 +2 more
core
Uncovering Xi Jinping's Policy Agenda: Text As Data Approach
The Developing Economies, Volume 63, Issue 1, Page 9-46, March 2025.How many agendas has Xi Jinping put forth and promoted since taking office in 2012, and what are the types of agendas? How much of political attention has each agenda received, and how has the allocation of attention changed over time? We utilize a dataset of presidential statements, speeches, and reports from 2012 to 2022 and employed automated text ...
Jaehwan Lim, Asei Ito, Hongyong Zhang
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Gaoya dianqi, 2013 故障选相是高压输电线路继电保护正确运行的重要环节,也是精确测距的重要前提。传统的故障选相方法仅适用于简单故障,灵敏度较低,容易受系统运行方式、故障接地电阻等的影响。笔者在输电线路各相电流故障分量分析的基础上,借鉴信号能量的概念,给出了故障分量能量的定义,提出一种利用故障分量能量系数实现故障选相的新方法。该方法直接利用故障电流,提取故障分量并计算故障分量前2个周期的信号能量,得到故障状态下各相电流故障分量能量占电流故障分量总能量的比例系数,构造故障相识别特征向量,建立故障选相概率神经网络进行选相 ...
吴浩, 郭辉, 蔡亮
doaj
Engineering Technology and Quality Management烟草机械是烟草生产必不可少的基础，一旦发生故障，可能影响整体生产效率，因此采用科学的故障诊断技术，加强机械运行维护，值得企业人员高度重视。本文将结合烟草机械故障类别，以及运行维护特点，讨论烟草机械故障诊断常用技术，希望有一定帮助。
朱 建松, 振武 张
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IET Collaborative Intelligent Manufacturing, Volume 6, Issue 4, December 2024.Domain‐adaptation‐based named entity recognition with information enrichment is proposed for developing an equipment fault knowledge graph. A question answering application of the equipment fault knowledge graph is proposed. Abstract Numerous files, such as records and logs, are generated in the process of equipment diagnosis and maintenance (D&M ...
Dengrui Xiong +3 more
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